NAME

dqdota - Compute a double precision constant plus an extended precision constant plus the extended precision dot product of two double precision vectors x and y. 

SYNOPSIS

DOUBLE PRECISION FUNCTION DQDOTA (N, B, C, X, INCY, Y, INCY )

double dqdota(long int n, double b, long double ∗dc, double ∗dx,
long int incx, double ∗dy, long int incy)

INTEGER INCX, INCY, N

DOUBLE PRECISION    X( ∗ ), Y( ∗ )

PURPOSE

DQDOTI - Compute a double precision constant plus an extended precision constant plus the extended precision dot product of two double precision vectors x and y. 
 

PARAMETERS

N      - INTEGER. 
On entry, N specifies the number of elements in the vector.  If N <= 0 then the function returns the value B+C.  Unchanged on exit.

B      - DOUBLE PRECISION. 
On entry, the constant that is added to the dot product before the result is returned.  Unchanged on exit.

C      - REAL∗16. 
On entry, the extended precision constant to be added to the dot product.  On exit, the extended precision result.

X      - DOUBLE PRECISION array of DIMENSION at least
( 1 + ( n - 1 )∗abs( INCX ) ). On entry, the incremented array X must contain the vector x.  Unchanged on exit.

INCX   - INTEGER. 
On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Unchanged on exit.

Y      - DOUBLE PRECISION array of DIMENSION at least
( 1 + ( m - 1 )∗abs( INCY ) ). On entry, the incremented array Y must contain the vector y. Unchanged on exit.

INCY   - INTEGER. 
On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. Unchanged on exit.

Sun, Inc.  —  Last change: 20 Sep 1996